Docker Build Feature doesn't escape username in the Connection setting

TeamCity Server Version: 2019.1.2 (build 66342)

I have a Docker Registry Connection like:

- Registry name: MyRegistry
- Registry address: https://registry.mycorp.com
- Username: robot$account
- Password: *********

It passes the connection test of course.

But, when I set Docker Build Feature as MyRegistry, it fails to login to the registry.

[18:06:15] Cannot login to registry registry.mycorp.com
[18:06:11] An error occurred while executing 'docker login -u "******" --password-stdin registry.mycorp.com':
Error response from daemon: Get https://registry.mycorp.com/v2/: unauthorized: authentication required

It shows the username as *****, but I think probably it doesn't escape the special characters in the username properly.

I also found a workaround. If I escape the Username like 'robot\$account' in the Docker Registry Connection, it will fails to test connection, but it actually works fine in the build.

Can you guys confirm this please?